Just a few months after revealing a Washington-sized impact crater buried under the ice in northwest Greenland, a team of scientists discovered that there was a company: a 180-kilometer depression that could also be an asteroid or comet crater.
Several years ago, as the researchers noticed the first crater, which was in the ordinary sight of the Hawaiian glacier in Greenland, they began to search for satellite recordings and ice-radar profiles for other circular distortions. NASA IceBridge's research flight profiles revealed a 36-kilometer-wide ladder-shaped width with a collection of elevated tops in the center resembling the slope left after an asteroid or a comet hit the Earth.
But unlike the Hiawatha crater, the pools have not yet received shocked quartz crystals, considered to be the best proof of alien impact. The pool seems eroded and filled with ice, older than the Hiawatha crater, and both suggest that if it is a crater, it probably comes from a different impact, scientists write this week at Geophysical studies,
Although this may seem implausible coincidence, other unrelated pairs of impacts have been found in Ukraine and Canada. And the speed of space collisions needed to achieve such a coincidence is possible given the latest research outlining the upsurge in Earth bombing of extraterrestrial objects over the past 300 million years.